NS

Nobuo Shigematsu

SC Shigematsu Works Co.: 8 patents #1 of 16Top 7%
Overall (All Time): #632,887 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
10576313 Detachable connector Kenichi Ono, Osamu Zaitsu 2020-03-03
8671943 Breathing apparatus Hiroyuki Ide 2014-03-18
7086400 Mask Kenichi Ono, Shuichiro Shimada 2006-08-08
5829433 Inhalation valve Kenichi Ono, Tsutomu Watabe 1998-11-03
4991577 Exhalation valve means of a respiration mask 1991-02-12
4892094 Pressure responsive diaphragm valve 1990-01-09
4748695 Face shield assembly Yoshiaki Haino 1988-06-07
4501272 Mask Kaisaburo Shigematsu, Yukio Okubo 1985-02-26